Resolving dependencies... cabal: Could not resolve dependencies: trying: base-4.9.0.0/installed-4.9... (dependency of snaplet-mongodb-minimalistic-0.0.5) next goal: mongoDB (dependency of snaplet-mongodb-minimalistic-0.0.5) rejecting: mongoDB-2.1.1.1, mongoDB-2.1.1, mongoDB-2.1.0.2, mongoDB-2.1.0.1, mongoDB-2.1.0, mongoDB-2.0.10, mongoDB-2.0.9, mongoDB-2.0.8, mongoDB-2.0.7, mongoDB-2.0.6, mongoDB-2.0.5, mongoDB-2.0.4, mongoDB-2.0.3, mongoDB-2.0.2, mongoDB-2.0.1, mongoDB-2.0, mongoDB-1.5.0, mongoDB-1.4.4, mongoDB-1.4.3, mongoDB-1.4.2, mongoDB-1.4.1.1, mongoDB-1.4.1, mongoDB-1.4.0, mongoDB-1.3.2, mongoDB-1.3.1, mongoDB-1.3.0, mongoDB-1.2.0 (conflict: snaplet-mongodb-minimalistic => mongoDB>=1.1.1 && <1.2.0) trying: mongoDB-1.1.1 next goal: monad-control (dependency of mongoDB-1.1.1) rejecting: monad-control-1.0.1.0, monad-control-1.0.0.5, monad-control-1.0.0.4, monad-control-1.0.0.3, monad-control-1.0.0.2, monad-control-1.0.0.1, monad-control-1.0.0.0, monad-control-0.3.3.1, monad-control-0.3.3.0, monad-control-0.3.2.3, monad-control-0.3.2.2, monad-control-0.3.2.1, monad-control-0.3.2, monad-control-0.3.1.4, monad-control-0.3.1.3, monad-control-0.3.1.2, monad-control-0.3.1.1, monad-control-0.3.1, monad-control-0.3.0.1, monad-control-0.3 (conflict: mongoDB => monad-control>=0.2 && <0.3) rejecting: monad-control-0.2.0.3, monad-control-0.2.0.2 (conflict: base==4.9.0.0/installed-4.9..., monad-control => base>=3 && <4.5) rejecting: monad-control-0.2.0.1, monad-control-0.2 (conflict: base==4.9.0.0/installed-4.9..., monad-control => base>=3 && <4.4) rejecting: monad-control-0.1 (conflict: mongoDB => monad-control>=0.2 && <0.3) Dependency tree exhaustively searched.